Sampo SME-27FDL5, Service Manual

Page: 19 / 95

SERVICE MODE ADJUSTMENT VER1.0
3
-10
(2)
AV MODE
ITEM ADJUSTMENT PROCEDURE
1 H-size adjustment (AV mode)
(under factory adjustment mode)
1. Set the AV mode (AV1).
2. Receive Lion pattern.
54321 12345
digital test pattern
→
→ →
→
Lion pattern
3. The item 2 of factory setting is to adjust H-size.
4. Adjust H-Steps to be 5
±
±±
±
0.5 .
2 V-size adjustment (AV mode)
(under factory adjustment mode)
1. Press INPUT key to select AV1.
2. Receive Lion pattern for AV1. (fig-1)
3. Go to the item 2 of factory setting is to adjust V-Size.
4. Adjust V-Steps to be 4
±
±±
±
0.5 .
3 Sub-Tint (Sub-Tint-AV)
1. Set the AV Mode(AV1)
2. Receive Color Bar pattern with 8 steps.
3. Connect the scope to Q813 Emitter.
4. Go to the factory setting. Select the Sub-Tint to adjust the
Sub-Tint to be as follow.
5. Let the below edge of step 2 and above edge of step 3 at
the same level.
4 SUB Contrast ( Sub-CONT-AV)
(Test point : B out ( Q813 “ C ” )
1. Set the AV Mode (AV1)
2. Receive gray scale pattern with 8 steps. (no color)
3. Connect the scope to Q813 Emitter.
4. Go to the factory setting. Select the Sub-Contract (AV) to
adjust the Sub-Contract (AV) to be as follow.
0.95Vp-p
1 2 3 4
Sub-Tint
V-steps
H-steps
(fig-1)